hai nguyen - citrusbyte coding question

flatten.js

var sampleArray = [[1,2,3],[[4],[5,6], [7,[8],9]], [10, 11], [12, [13, 14]]]

function flatten(array) {
    var result = [];
    recurseFlatten(array, result);;
    return result;
}

function recurseFlatten(array, result) {
    for (var i = 0; i < array.length; i++) {
        var item = array[i];
        if (Array.isArray(item)) {
            recurseFlatten(item, result);
        } else {
            result.push(item);
        }
    }
}

console.log(flatten(sampleArray))